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Re: Why can't CSE recognize const_int's in HIGH LO_SUM pair?

To: Daniel Berlin <dan at cgsoftware dot com>
Subject: Re: Why can't CSE recognize const_int's in HIGH LO_SUM pair?
From: Richard Henderson <rth at redhat dot com>
Date: Mon, 10 Sep 2001 11:32:02 -0700
Cc: law at redhat dot com, John David Anglin <dave at hiauly1 dot hia dot nrc dot ca>, Bernd Schmidt <bernds at redhat dot com>, gcc at gcc dot gnu dot org
References: <20010910095948.A8881@redhat.com> <25601.1000142996@localhost.localdomain> <20010910104403.E8881@redhat.com> <87d74yuddv.fsf@cgsoftware.com>

On Mon, Sep 10, 2001 at 02:09:00PM -0400, Daniel Berlin wrote:
> Without rematerialization,  or live range splitting, we'd spill twice
> as much as we would before here.

But reload _does_ do simple rematerialization.  See reg_equiv_constant.



r~

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